Coloring composition and inkjet recording method
US7250079B2 · kind B2 · utility
4Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2004 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Aug 23, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a water-soluble ink capable of forming an image having good color hue and high fastness in various use and environmental conditions, which comprises a coloring composition comprising a disazo dye represented by the following formula 1: A1-N═N-A2-N═N-A3 and at least one other dye having a specific structure; in formula 1, A1, A2 and A3 each independently represents an aromatic group which may be substituted or a heterocyclic group which may be substituted, and A1 and A3 each is a monovalent group and A2 is a divalent group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.